{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["cell line", "DNA", "cell type", "RNA", "protein"], "input": "The conversion of the TCEd to a 'perfect' NF-kB binding site leads to a tighter binding of NF-kB to TCEd DNA and, as a functional consequence, to the activity of the 'converted' TCEd motifs in HeLa cells ."}
{"cell line": ["HeLa cells"], "DNA": ["TCEd", "'perfect' NF-kB binding site", "TCEd DNA", "'converted' TCEd motifs"], "cell type": [], "RNA": [], "protein": ["NF-kB"]}